/Engine/Source/Editor/SceneOutliner/Public/SSceneOutliner.h
Called after a key is pressed when this widget has focus (this event bubbles if not handled)
Returns whether the event was handled, along with other possible actions
virtual [FReply](API\Runtime\SlateCore\Input\FReply) OnKeyDown ( const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & MyGeometry, const [FKeyEvent](API\Runtime\SlateCore\Input\FKeyEvent) & InKeyEvent )